Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
quartzite .
Etymologies
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Examples
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More of the material is commonly rearranged by solution and redeposition, so that limestone may be converted into crystalline marble, granular sandstones into firm masses, known as quartzites, and clays into the harder form of slate.
Outlines of the Earth's History A Popular Study in Physiography Nathaniel Southgate Shaler 1873
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All the rocks are of Pliocene or Pleistocene, fluviatile origin, and consist mainly of sandstones, conglomerates, quartzites, shales and micaceous sandstone.
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The mixed geology of this region includes the highest portions of the limestone plateau, areas of schists, slates and quartzites, and large masses of granite that form the most prominent peaks.
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The Mahabharat Range consists of severely eroded pre-Siwalik quartzites, phyllites and sandstones.
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On the Gaspé Peninsula and in the New Brunswick and Cape Breton Highlands, the Appalachian peneplain is also a factor, but is characterized by hummocky to mountainous terrain, underlain by folded Paleozoic sandstones and quartzites.
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Within Australia, there are several examples of tower karst landscapes in quartzites, such as the ruiniform relief of Arnhemland Plateau, the Watarrka and Keep River national parks in the Northern Territories, and Monolith Valley in New South Wales.
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Most of the ecoregion is covered by recent sands and clays from the Holocene, while higher elevations have soils composed of granites, Precambrian amphibolites, Paleozoic granites, quartzites and black slate from the Devonian, dark limestone, sandstone, and lutites from the Carboniferous period.
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Most significant is the presence of the Sinharaja Basic Zone, consisting of hornblende, pyriclasts, basic charnokites, pyroxene amphibolites and scapolite-bearing calc-granulites and blended with small amounts of quartzites, garnet-biotite gneisses and intermediate charnokites.
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The Nova Scotia uplands consist of folded Palaeozoic slates and quartzites that form broad, sloping plains.
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To the south of the St. Lawrence River, the Appalachian complex is dominated by folded Palaeozoic sandstones and quartzites.
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